As the network transmission is prevailing in many applications, an entity in a network virtual environment (NVE) can deliver data to other entities under peer-to-peer architecture. This paper proposes a message interchange protocol based on routing information protocol (RIP). In this message interchange protocol, every entity can know that it is in some entities' area of interested (A 0/). In this way, every entity can deliver data to other entities without via server. Furthermore, according to the group in four quadrants, every entity can get the information of other entities' by interchanging data of each others'. Based on this message interchange protocol, every entity can still work in the NVE when the server is crashed. Even if there is an entity crashes, other entities can also work in the NVE.